Transfer game files
You should reinstall the game and then cancel the download when it starts (not the client update, but when the bar appears at the bottom and starts to fill up).
You can then Copy the GW2.DAT file from your moved copy to the new installation folder (just overwrite the existing GW2.DAT in that folder). I’m not sure of the details but there should be a Guild Wars 2 folder in your Program Files (x86) folder but I’m not sure where Win 8.1 puts a new GW2 installation. Keep in mind that there could be some permission issues with that folder and your current logged in user.
Then when you restart the client it should automatically check the new file and only download anything it finds corrupt or any new updates.
Good luck!
Fate is just the weight of circumstances
That’s the way that lady luck dances
You don’t even need to reinstall… just drag that gw2 folder anywhere and launch it.
Thanks! Installing the installer, then running the original .exe worked! Saved me 10 hours